Scseem-cleahilxtg apparatus



' INVENTOR.

A TTORNE Yx? p w. DOLIER seamen CLEANING APPARATUS Filed Feb. 8. 1924' WM .1. 9&2;

Patented Apr. 12, 1927.

P TENT oFFicE.

WILLIAM L. DOLIER, OF PHELADELPHIA, PENNSYLVANIA.

SCREEN-CLEANING APPARATUS.

Application filed February My present invention relates to apparatus for cleaning screens, such as are commonly used in screening sewage, as, for instance, of the well-known Reinsch-lVurl type, and will be best understood from the following description and the annexed drawings, in which Fig. 1 is a partial elevation, partly in section, of an illustrative embodiment of my invention as applied to a Relnsch-lVurl screen; Fig. 2 is an enlargement of a portion of Fig. 1, and Fig. 3 is a section on the line 3-3 of Fig. 1.

Like reference characters parts in the several views.

In the illustrative embodiment, is a circular rotary screen (partially broken away) and 11 is a conical screen, these two forming the well-known type of screen, in which the rotation is about the axis of the cone 11. The screen is rotated at an angle so that the lowermost portion dips into the flow of sewage being screened, the matter screened out being carried upward as the screen rotates and being brushed off of the screen while in the upper position. A brush is us 1y provided for cleaning the flat por tion of the screen and another brush for cleaning the cone portion of the screen, and my present inrention relates to brushes particularly adapted for such cleaning and also to speial arrangements for supportin rotating and adjusting such brushes.

()n any suitable beam 12 is carried a support 13 in which is rotatably mounted a sleeve l-l having at its lower end an arm 15 on one end of which, with its axis parallelto the axis of the sleeve 14;, is a brush shaft bearing 16 in which is mounted one e d of a brush shaft 17, on the other end which is mounted a brush to be described more particularly hereinafter.

Through the sleeve 14 extends a drive y gears 19 from a power shaft 20. The sleeve 14 and its arm 15 form 1. 'ing for the shaft 18, this bearing bedividcd into two parts in the arm 15, with a space between the two parts in which is located a spur gear 21 keyed to the shaft 18. Similarly the bearing 16 is divided into two parts. the space between the parts being occupied by a spur gear 22 meshing with the spur gear 21, the gear 22 being keyed to the brush shaft 17. The arm 15 and brush shaft 17 are shown in Fig. 1 in a position more removed from the cone 11 than is indicate like 8, 1924. Serial No. 691,417.

usual, in order to more clearly illustrate the construction. The brush itself is cylindrical and it is desirable to move it toward and away from the cone 11 so that in the event that no material is being deposited on the cone, the brush can be thrown out of contact so as to save unnecessary wear. To this end, the arm 15 and its sleeve 14 may be rotated in the support 13 by any suitable means, the form illustrated comprising an arm 23 which may be pivoted on the end of the shaft 17 and carrying a nut 2% through which extends a screw 25, the screw 25 being rotated by gears 26 and 27 from a suitable adjusting spindle 28.

It will be noted that since the brush shaft 17 is moved around the center of the drive shaft 18, such movement will not disturb the driving connection between the drive shaft 18 and the brush shaft 17. Moreover, it will be noted that the brush shaft 17 is driven by a gear located between a pair of bearings so that, although the shaft 17 is supported at one end only, nevertheless it is held by the long bearing 16 so that it is amply supported when the brush is pressing against the cone 11.

In the illustrative embodiment, the brush proper is formed from bristles held in slats 29, the ends of the slats being fastened respectively to the outer surfaces of rings 30 and 31 by screws The slats 29 are preferably of wood and preferably also are placed side by side so as to form a complete cylinder.

On the brush shaft 'are a pair of hubs 33, 3%, these hubs being splined to the shaft and the hub 33 preferably resting against a shoulder on the shaft 17. The hub 3 1 is arranged so that it may be removed longitudinally of the shaft by the nuts 35 toward the hub The hub 33 is provided with an outwardly extending flange 36, inside of which is located a ring 30. The hub 33 may also be provided with a circular flange 37, on the outer surface of which is fastened a ring 38 to which the slats 29 may be fastened by screws, as shown best in Fig. 1. The screws for fastening the ring 38 to the circular hub 37 may be inserted from the outside through the slats 29.

The hub 34 is provided with an outwardly projectingflange 39 against which rests the ring 31, the end of the shaft 17 and the flange 39 preferably being arranged so that the end of the shaft does not extend beyond the flange 89.

By the brush arrangement described, the bristles may be carried down so that they will clean the cone. to a point very close to the intersection between the cone 11 and the plate 10. This may be done because there are no hearings or other projections beyond the end of the brush which mightcontact with the flat portion of the screen to injure the same if this flat portion 10 does not run perfectly true. in order to carry the bristles down as far as possible, one or more rows of bristles may be inserted in the ring" 31, if desired.

The brush which I have described is particularly adapted for replaeen'ient and repair. It will be undesstood that the wear on such brushes is comparatively heavy so that parts or the entire bristle surface of the brush must be renewed from time to time. To this end, the rings 3O, 31 and also the ring 38, if such be used, are made in two halves, as shown best in Fig. 3, where the halves are divided on lines indicated at 40, 41. The slats-29 may be fastened to the two-part rings 30 and 31 in any suitable fixture and the bristles made truly cylindrical. Then the old brush may be removed by removing; the screws which fasten the rings 30 and 31 respectively to the flanges 86 and 39 and by moving the nuts 35, the flange 39 can be moved slightly to release any pressure on the brush proper. The brush may then be removed in two complete halves and the new brush substituted by moving the two halves into position laterally of the shaft 17 and fastening; the rings by the screws through the flanges 36 and 39 and further clan'iping the brush by tightening the ends 35 to move the flange 39 against the ring" 31 to clamp the brush proper between the flanges 3G and 39, if such clamping is desired.

It will be understood that the several features of my invention may be used independently of each other. Thus the particular construction of brush may be used for the brush which cleans the flat disc 10.

It will be obvious that the slats 29 may be fastened directly to the flanges 36 and 39, but this will involve the independent mounting of the slats and would not be so convenient for purposes of replacement. It will also be understood that the brush may be held between the flanges 36 and 39 by pressure of the nuts 35 only, the screws 41 then being omitted.

I claim:

1. A cleaning device including a support, a rotatable sleeve in said support, said sleeve having an arm at one end, a brush shaft bearing in said arm with its axis parallel to but outof alinement with the axis of said sleeve, a brush shaft having one end in said brush shaft bearing", and a cylindrical brush on said brush shaft and connected thereto, said brush shaft being supported by the bearingat one end only, means torotate said brush shaft and means whereby said sleeve may be turned in its support.

2. A cleaning device including a support, a rotatable sleeve in said support, said sleeve l'iaving an arm at one end, a brush shaft bearing in said arm with its axis parallel to but out of alignment with the axis of said sleeve, a brush shaft having one end in said brush shaft bearing, and a cylindrical brush on. said brush shaft and connected thereto, said brush shaft being supported by the bearing at one end only, a drive shaft extending through said sleeve, spur gearing between said drive shaft and said brush shaft, and means whereby said sleeve may be turned in its support.

3. A cleaning device including a support, a rotatable sleeve in said support, said sleeve having an arm at one end, a brush shaft bearingin said arm with its axis parallel to but out of alignment with the axis of said sleeve, a brush shaft having one end in said brush shaft bearing, and a cylindrical brush on said brush shaft and connected thereto, said brush shaftbeing supported by the hearing at one end only, said sleeve having aupair of internal bearings concentric with said sleeve and spaced apart, adrive shaft extending through said sleeve and supported in said spaced-apart bearings, said brush shaft bearing having twoparts spaced apart, with the space between said parts located 0pposite the space between. the hearings in said sleeve, a pair of intermeshing spur gears in said spaces and each connected to one of said shafts, and means whereby said sleeve may be turned in its support.

WILLIAM L. DOLIER. 

